diff --git a/pyproject.toml b/pyproject.toml
index a34afe30..3e0a6e08 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,7 +50,7 @@ dependencies = [
     "numpy>=1.22.0",
     "psutil>=5.9.4",
     "python-dateutil>=2.0",
-    "ray>=2.6.3,<2.8.0",
+    "ray>=2.9.0,<=2.9.3",
     "ruamel.yaml>=0.15",
     "scipy>=1.8.0",
     "sigmf @ git+https://github.com/NTIA/SigMF@multi-recording-archive",
@@ -65,7 +65,7 @@ test = [
 dev = [
     "hatchling>=1.14.1,<2.0",
     "pre-commit>=3.3.1,<4.0",
-    "ray[default]>=2.4.0",
+    "ray[default]>=2.9.0",
     "scos-actions[test]",
 ]